lupdate error: Passing a CMakeLists.txt as project file is not supported

We are using QT 6.7.2 and started a simple application with one label.
Also have tree translation files.
We added a label to the UI with a text tr("Welcome).

Now we try to use the buildin tool Linguist and update translations

The following issues where found:

Quote:

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Starting external tool "C:\Qt\6.7.2\mingw_64\bin\lupdate.exe D:/QTProjects/Test/Translation1/CMakeLists.txt"
lupdate error: Passing a CMakeLists.txt as project file is not supported.
Please use the 'qt_add_lupdate' CMake command and build the 'update_translations' target.
"C:\Qt\6.7.2\mingw_64\bin\lupdate.exe" finished with error

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What are we doing wrong?
Have we forgot something?

Please advise

Have you read the documentation on using Linguist in a cmake build?

You need to add two commands to your CMakelists.txt file:

One to add the CMake components needed to invoke Linquist during build time:

Code:

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find_package(Qt6 REQUIRED COMPONENTS LinguistTools)

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And another to actually invoke Linguist to create .ts files for your sources:

Code:

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qt_add_lupdate(target TS_FILES file1.ts [file2.ts ...]
               [SOURCES source1.cpp [sources2.cpp ...]]
               [INCLUDE_DIRECTORIES directory1 [directory2 ...]]
               [NO_GLOBAL_TARGET]
               [OPTIONS ...])

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The documentation explains what these commands and their parameters mean.